After enjoying a surge in their wealth a year ago, Thailand’s richest hit a speed bump in 2019. Uncertainty ahead of the country’s March elections and a slow economy dampened sentiment, sapped the Thai baht and sent the country’s benchmark stock index down roughly 7% since we last measured fortunes. The combined net worth of the listees was slightly lower at $160.5 billion from last year’s total of $162.5 billion.

Half of the nation’s richest saw their fortunes decline, including each of the top four. The Chearavanont brothers of the Charoen Pokphand group retained the No.1 spot with a net worth of $29.5 billion. Dhanin Chearavanont, the group’s senior chairman, stepped down in April as chairman of flagship Charoen Pokphand Foods after 25 years in that position. (He remains chairman of CP All, the listed operator of 7-Eleven stores.)

But a fortunate third of the list members ended up better off than a year ago. The biggest gainer was energy tycoon Sarath Ratanavadi, whose fortune surged by $1.8 billion, earning him a spot in the top five for the first time. Shares of his Gulf Energy Development soared 57% in the past 12 months as new power projects came online and the company’s 2018 revenue more than doubled, to $628 million.

Another gainer was the Osathanugrah family, which got a boost from the October 2018 listing of Osotspa, their 128-year-old energy drink maker. Run by the colorful Petch Osathanugrah, an art collector and former pop singer, Osotspa was founded by his great-grandparents as a small pharmacy selling herbal medicines.

There are four new faces on this year’s list, including Chaivat Taepaisitphongse, chairman of Betagro Group, an agrifoods outfit. Aiyawatt Srivaddhanaprabha, 33, the youngest on the list, debuts with a $4.7 billion fortune shared with his family, after his father, the late duty-free tycoon Vichai Srivaddhanaprabha, died in a helicopter crash in October 2018. Banker Chartsiri Sophonpanich, 59, president of Bangkok Bank, appears for the first time, replacing his late father Chatri, who died last June.

Notable among the four returnees to the ranks is Prachai Leophairatana, who makes a comeback after a five-year hiatus. His cement and concrete maker TPI Polene returned to the black in 2018 with a $45 million profit, helping send its stock up 14% since the last time we tallied our list. Five from last year didn’t make the cut, however, including Sarawut Pornpatanaruk, founder of Do Day Dream, maker of SnailWhite skin-whitening products, due to a fall in exports to China, its biggest overseas market.

This list was compiled using shareholding and financial information obtained from the families and individuals, stock exchanges and analysts, the Stock Exchange of Thailand and regulatory agencies. Unlike our billionaire rankings, this list encompasses family fortunes, including those shared among extended families of multiple generations. Public fortunes were calculated based on stock prices and exchange rates as of April 26. Private companies were valued based on comparisons with similar companies that are publicly traded.